package com.lxh.cp.controller;

import com.lxh.cp.config.WxCpConfiguration;
import com.lxh.cp.utils.JsonUtils;
import com.lxh.cp.utils.WxCpUtils;
import me.chanjar.weixin.cp.api.WxCpService;
import me.chanjar.weixin.cp.bean.WxCpXmlMessage;
import me.chanjar.weixin.cp.bean.WxCpXmlOutMessage;
import me.chanjar.weixin.cp.message.WxCpMessageRouter;
import me.chanjar.weixin.cp.util.crypto.WxCpCryptUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.*;

/**
 * created by lanxinghua@2dfire.com on 2020/2/23
 * 、企业微信内部应用开发
 */
@RestController
@RequestMapping("/wx/cp/portal/{agentId}")
public class WxPortalController {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    private WxCpService wxCpService;


    @GetMapping(produces = "text/plain;charset=utf-8")
    public String authGet(@PathVariable Integer agentId,
                          @RequestParam(name = "msg_signature", required = false) String signature,
                          @RequestParam(name = "timestamp", required = false) String timestamp,
                          @RequestParam(name = "nonce", required = false) String nonce,
                          @RequestParam(name = "echostr", required = false) String echostr) {
        this.logger.info("\n接收到来自微信服务器的认证消息：signature = [{}], timestamp = [{}], nonce = [{}], echostr = [{}]",
                signature, timestamp, nonce, echostr);
        if (StringUtils.isAnyBlank(signature, timestamp, nonce, echostr)) {
            throw new IllegalArgumentException("请求参数非法，请核实!");
        }
        wxCpService = WxCpUtils.switchover(agentId);
        if (wxCpService.checkSignature(signature, timestamp, nonce, echostr)) {
            return new WxCpCryptUtil(wxCpService.getWxCpConfigStorage()).decrypt(echostr);
        }
        return "非法请求";
    }


    @PostMapping(produces = "application/xml; charset=UTF-8")
    public String post(@PathVariable Integer agentId,
                       @RequestBody String requestBody,
                       @RequestParam("msg_signature") String signature,
                       @RequestParam("timestamp") String timestamp,
                       @RequestParam("nonce") String nonce) {
        this.logger.info("\n接收微信请求：[signature=[{}], timestamp=[{}], nonce=[{}], requestBody=[\n{}\n] ",
                signature, timestamp, nonce, requestBody);

        wxCpService = WxCpUtils.switchover(agentId);
        WxCpXmlMessage inMessage = WxCpXmlMessage.fromEncryptedXml(requestBody, wxCpService.getWxCpConfigStorage(),
                timestamp, nonce, signature);
        this.logger.debug("\n消息解密后内容为：\n{} ", JsonUtils.toJson(inMessage));
        WxCpXmlOutMessage outMessage = this.route(agentId, inMessage);
        if (outMessage == null) {
            return "";
        }
        String out = outMessage.toEncryptedXml(wxCpService.getWxCpConfigStorage());
        this.logger.debug("\n组装回复信息：{}", out);
        return out;
    }


    private WxCpXmlOutMessage route(Integer agentId, WxCpXmlMessage message) {
        try {
            WxCpMessageRouter router = WxCpUtils.getRouter(agentId);
            if (router == null){
                throw new Exception("路由为空！");
            }
            return router.route(message);
        } catch (Exception e) {
            this.logger.error(e.getMessage(), e);
        }
        return null;
    }
}
